Printing plate with indented guide rail and text bearing strip



Oct 8, 1968 M. THOLLEFSEN PRINTING PLATE WITH INDENTED GUIDE RAIL ANDTEXT BEARING STRIP Filed July 8, I965 PIC-7.3 F164 FIG] United StatesPatent 3,404,629 PRINTING PLATE WITH INDENTED GUIDE RAIL AND ,TEXTBEARING STRIP Marshall Thollefsen, 'Nittedal, Norway Filed July 8, 1965,Ser. No. 470,389 Claims priority, applicagogslforway, July 10,1964,

.6 Claims. 61. 101-469) ABSTRACT OF THE DISCLOSURE A printing plate isprovided with a guide rail by folding back one of its edges and aportion of the rail is, in various ways, depressed relative to theremainder of the rail to accommodate a text bearing strip.

The present invention relates to indexing printing plates of the typewherein guide rails are formed by the double folding of material alongtwo longitudinal marginal edges of the plate for the purpose of guidingthe plate when it is to be passed through a printing machine. An objectof the invention is to provide for forming one of the said guide railsas to adapt the same for the reception of one or more text bearingstrips for the identification of the particular indexing printing plate.

According to the invention, one of the two double folds forming theguide rails of the plate is compressed, perpendicularly to the plane ofthe plate along at least part of the length of the fold, so as toprovide, between portions having full hold thickness, a recess adaptedto receive a text bearing strip in such a manner that the strip will notinterfere with the sliding of the plate through the printing machine.

Conveniently, the recessed portion or portions is or are so positionedthat a portion of the guide rail having full fold thickness is left ateach end of the plate, so as to secure an adequate guiding of the platethrough the printing machine. For the same reason, the recessed portionor portions may also be so arranged as to be of less height than theguide rail proper, a strip of full fold thickness being left along theside adjoining the printing space of the plate. Alternatively, the depthof the recessed portion may be reduced adjacent to the free marginaledge of the plate as compared with the depth along the printing space.

The accompanying drawing illustrates some embodiments of the indexingprinting plate according to the invention.

FIGURE 1 is a plan view of part of a plate, as seen looking towards theprinting face of the same;

FIGURE 2 is a longitudinal sectional view taken along line IIII ofFIGURE 1;

FIGURE 3 is a vertical sectional view of the plate, taken along lineIIIIII of FIGURE 1;

FIGURE 4 is a sectional view, taken along line IV-IV of FIGURE 1;

FIGURES 5a, b and c are sectional views of respective modifications,these views corresponding to that shown in FIGURE 4;

FIGURE 6 is a side view, corresponding to that shown in FIGURE 1, butillustrating another embodiment of the recessed portion; and

FIGURE 7 is a sectional view, taken along line VII-VII in FIGURE 6.

In the drawing, 1 is the printing space of the plate, which along bothlongitudinal marginal edges, of which only one is shown in the drawing,is provided with a flange portion 2 adjoining a guide rail 3 which isformed by double folding the plate material, which may be zinc, aluminumor any other suitable material. Along the edge of the guide rail theplate may, as known per se, be provided with slots 4 for the receptionof tabs, such as indicated at 5, each tab being also provided with atransverse pin 6 adapted to engage a recess 7 at the'bo-ttom of each ofthe slots 4. The lower portion of the tab 5 engages the interior of thefold 3, as shown in FIG. 4.

According to the invention, the fold 3 is provided with i a recessedportion 8, formed by compressing the legs 9 and 10 of the foldperpendicularly to the plane of the plate. This recess'S may extendcontinuously between points near the ends of the plate, so as to leave aportion 11 of full fold thickness at each end of the plate, for thepurpose of guiding the plate through the printing machine.Alternatively, a number of such recesses may be provided, withintermediate portions of full fold thickness. Such recesses 8 are ofsuch a depth that a text bearing strip 12 may be received, in such amanner that the strip will not, due to its thickness, interfere with thesliding of the plate through the printing machine, care being taken thatthe lower portion of a tab 5 may conveniently be received between thefold legs 9 and 10.

As shown in theFIGS. 5 to 7, the recess 8 may be formed in variousmanners. Thus, in FIGS. 5a, b and c, three possible forms are shown, inwhich the fold 3 has retained its full Width along the guide edge, therecess being either made with an oblique bot-tom, or being defined by .abead 13 extending along the guide edge. In FIGS. 6 and 7, on the otherhand, the recess 8 extends right out to the guide edge, a longitudinalstrip 14 of full fold thickness being left in that part of the foldwhich adjoins the printing space.

The form of the printing plate according to the present inventionimplies i.e. the advantage that the space in which the text bearingstrip is to be placed may extend along a much greater part of the lengthof the plate than possible in previously known plate forms. At the sametime too it is possible to utilize the entire length of the text stripfor printing purposes, as the strip is not to be held in position bymeans of any overlapping portion of the fold. Consequently, .if is alsopossible to make the text strips from self adhering material. A furtheradvantage is that the height of the fold may be made relatively small,as the entire printing space of the text bearing strip is visible, sothat the height of the printing space of the plate is madecorrespondingly greater while retaining the same total plate height,such height being determined by the printing machine in which the platesare to be used.

I claim:

1. An article of manufacture comprising a printing plate, at least oneguide rail marginally connected with said plate, said guide rail havinga generally U-shaped cross-section and including two legs and aconnecting section joining said legs, one of said legs having anextremity, remote from said connecting section, connected to said plate,the other of said legs having an indentation directed towards said oneleg, and a strip of text bearing material in said indentation, saidindentation having a depth at least equal to the thickness of saidstrip.

2. An article as claimed in claim 1 wherein said plate includes anangularly disposed flange to which the said extremify of said one leg isconnected and wherein said other leg includes a free extremity extendingto a position adjacent said flange.

3, An article as claimed in claim 2 wherein said legs have a maximumspacing therebetween adjacent said flange.

4. An arflcle as claimed in claim 2 wherein said connecting section isprovided with an opening, comprising a tab extending through saidopening and between said legs and a pin on said tab limiting thepenetration of the tab into said rail.

5,--An article as-elaimed inclaim 2 wherein the indenta-' tion extendsonly along a part of said other leg between the connecting section andsaid free extremity.

6. Arr-article as claimed in claim 2 wherein theconnecting portion isprovided with spaced apertures and said indentation extends along aportion of the rail corresponding to a plurality of said apertures.

References Cited UNITED STATES PATENTS 5/1915 Fergusson 129 16.8 7/1924Chisholm 12916.8

4 -1,53 8,403' -5/1925 '-Krell ..::f;' ;-:-"-10l"-'-'=369 2,298,57110/1942 Lindherg 12916.8 2,708,439 5/1955 Ostwaldt 101369 2,761,4539/1956 Qs twaldt 129-16.8

t BE G S P N SI 6u0,566; 4/ 1948 Great/ Britain: 684,235 :12/1952 GreatBritain. 1 725,647 3/1955= Great- Britain.

ROBERT E. PULFREY,"Primary Examiner.

, J. R. FISHER, Assistant Examiner.

